Figure 17: Modbus operation
Danf
oss
84B8347
Tx
Rx
Green
Tx (Transmit)
Rx (Receive)
Yellow
IMPORTANT:
It is important that the installation of the data communication cable is performed correctly with sufficient distance
to high voltage cables.
Integration into network
The “o03 network address” must be set up in the controller. The network must be set in the range 1 – 120 for
integration with a Danfoss front end.
Master control via network
The system manager can perform various control via the network. For the EKC controllers the system manager can
via internal schedules control the day/night status, light status and defrost, including coordinated defrost among
multiple controllers:
Table 6: Override functions
Function via data communication
Functions to be used in the gateway’s override
function
Used parameter in AK-CC 210B
Start of defrosting
Defrost control
Time schedule
- - - Def.start
Coordinated defrost
Defrost control
- - - HoldAfterDef
u60 Def.relay
Night setback
Day/night control
Time schedule
- - - Night setbck
Light control
Day/night control
Time schedule
o39 Light Remote
© Danfoss | Climate Solutions | 2023.05
BC432222569027en-000201 | 17
Case controller, type EKC 223 and EKC 224